Optoisolators with Triac or SCR output are specialized components used to control AC loads and provide galvanic isolation between high power circuits and control systems. These optoisolators are essential in minimizing electrical noise and ensuring safe and efficient load switching.

Prominent manufacturers including IXYS, Fairchild Semiconductor, and Sharp offer these devices, which are often deployed in motor control, lighting dimmers, and industrial automation. Their ability to handle high voltages and currents makes them indispensable in heavy-duty applications.

The combination of Triac or SCR with an optoelectronic interface allows precise control over AC power, ensuring safe operation in electrically noisy environments. These optoisolators are valued for their ruggedness and reliability, providing long-term solutions in diverse industrial and commercial settings.